import { asyncRoutes, constantRoutes } from '@/router'

/**
 * 通过meta.role判断是否与当前用户权限匹配
 * @param roles // 用户权限
 * @param route
 */
const hasPermission = (roles, route) => {
    if (route.meta && route.meta.roles) {
        return roles.some(role => route.meta.roles.includes(role))
    } else {
        return true
    }
}
/**
 * 递归过滤异步路由表，返回符合用户角色权限的路由表
 * @param routes asyncRoutes
 * @param roles
 */
export const filterAsyncRoutes = (routes, roles) => {
    const res = []
    routes.forEach(route => {
        const tmp = { ...route }
        if (hasPermission(roles, tmp)) {
            if (tmp.children) {
                tmp.children = filterAsyncRoutes(tmp.children, roles)
            }
            res.push(tmp)
        }
    })

    return res
}
const state = {
    routes: [],
    addRoutes: []
}
const mutations = {
    SET_ROUTES: (state, routes) => {
        state.addRoutes = routes
        state.routes = constantRoutes.concat(routes)
    }
}
const actions = {
    generateRoutes({ commit }, roles) {
        return new Promise((resolve, reject) => {
            let Routes
            if (roles.includes('admin')) {
                Routes = asyncRoutes
            } else {
                Routes = filterAsyncRoutes(asyncRoutes, roles)
                console.log(Routes)
            }
            commit('SET_ROUTES', Routes)
            resolve(Routes)
        })
    }
}
export default {
    namespaced: true,
    state,
    mutations,
    actions
}